Eduard luhmam



(No ModeL) E. LUHMANN.

MEASURING APPARATUS FOR LIQUID GARBONIG AGID. No. 327,448. PatentedSept. 29, 1885.

N. Pzrns mowurhamoher. Wnbinlhm. uc.

UNITED STATES PATENT OFFICE.

EDUARD LUHMANN, or ROGASEN, PRUSSIA, GERMANY.

MEASURING APPARATUS FOR LIQUID CARBONIC ACID.

SPECIFICATION forming part of Letters Patent No. 327,448, datedSeptember 29, 1885.

Application filed August 11, 1884. (No model.) Patented in England July22, 1884, No. 10,437; in Belgium August 16, 1884, No. 65,858; in GermanySeptember 19, 1884, No. 29,678; in France February 2, 1885, No. 165,083,and in Spain March 20, 1885, No. 6,635.

To all whom it may concern.-

Be it known that I, Dr. EDUARD LUHMANN, of the city of Rogasen, Prussia,Germany, and a subject of the King of Prussia, have invented certain newand useful Improvements in Measuring Apparatus for Liquid Carbonic Acid,of which the following is a specification.

My invention relates to improvements in an apparatus for dispensingliquefied gases in measured quantities; and it consists of a hollowstop-cock of peculiar construction, which serves asameasuring-vessel,and which is connected to the receiver and thedelivery-vessel, and by which communication is established either withthe receiver or with the deliveryvessel, or entirely interrupted,together with the means for operating said cock, as hereinafter morefully described.

In the accompanying drawings, Figure lis an elevation of my improvedapparatus, showing the vessel containing the liquid to be aerated insection; Fig. 2, a detail section of the measuring apparatus; Fig. 3, anelevation of the apparatus shown as applied for raising beer or otherliquids, and Fig. 4 a detail section of a modified form of the measuringapparatus.

Similar letters of reference indicate corresponding parts.

A is a receiver, containing liquid carbonic acid, or any other gasliquefied at high pressure. B is a measuring apparatus, and O a vesselto which the carbonic acid is to be supplied in accurately-measuredquantities.

a is a pipe connecting the receiver A with the measuring apparatus B,and b a pipe connecting the latter and the vessel 0, which must beprovided with a valve or stop-cock. The receiver A is of the kindgenerally used for supplying liquid carbonic acid to the trade. It issupported with its mouth downward, so that only liquid acid shall passout, while the space above the liquid is filled with carbonicacid gas.

The delivery-vessel 0 (shown in Fig. 1) is of the usual construction ofvessels for aerating liquids. m is a manometer attached to the same.

The measuring-vessel B, which is shown in section and on a larger scalein Fig. 2, is in substance astop-cock, of which 0 is the body or casing,and P the plug. lar extensions, by which the measuring apparatus isconnected with the pipes at and I), re spectively. u and t are thepassages for the liquid to and from the plug.

The plug P is made hollow, and not perforated like the plugs of ordinarystop-cocks for a passage through the same, but is provided with but oneopening, 1;. The plug is made large enough to hold the desired quantityof liquid acid. The hollow plug P has a bulbshaped enlargement, 2, atthe end of the tapering end at in the casing O. The tapering part 00 andbulb z are screwed together and then soldered at the joint, the part 00forming the plug proper, while the part 2 is added for the purpose ofincreasing the aggregate capacity of the measuring-vessel, the plugproper being necessarily of small dimensions. sis a nut for holding theplug in position in the usual manner.

The construction of the measuring apparatus may be varied, and the plugmay have more than one opening. It must be so arranged, however, that inone position the interior of the plug communicates with theretaining-vessel, shutting off all other communication, while in thesecond position it closes all communication, while in a third positionit communicates only with the receivingvessel or with the place ofdelivery.

When but very small quantities ofliquid are to be measured out at oneoperation, the plug is not enlarged, but is by preference made as shownin Fig. 4.

WVhen desired, the vessel 0 may be used for washing the gas or as apressure-regulator, from which it passes to a keg or other vessel, D, asshown in Fig. l.

The operation of the apparatus is as follows: The plug P being in theposition shown in Fig. 2, the stop-valve of the receiver A is opened,allowing the liquid acid from the same to pass through the pipe a,passage u, and opening 1;

into the plug P, so as to fill the latter with liquid. The plug is thenturned through an angle of ninety degrees, whereby communication withthe receiver A is closed. By turning the plug another ninety degrees theopen ing o is brought over the passage t, thus connecting the interiorof the plug P with the r and q are tubuvessel 0. By alternately turningthe plug P 1 so as to open or close the connection with the vessel 0, orby so turning the plug P that part only of the opening 1; passes overthe passage t,'the discharge is regulated as desired, and thereby ameasured quantity of the liquid carbonic acid is transferred from thereceiver to the place of use.

When small quantities of carbonic acid are to be supplied at intervalsof time to a beercask for aerating and raising it, the measuringapparatus shown in Fig. 4 is connected to a keg, D, as shown in Fig. 3.The keg D is connected by a pipe with the place where the contents ofthe keg are to be drawn off, and e is the faucet for dispensing thesame. 1" a r are small guide-pulleys, and Z a cord which passes over thesame, and is connected at one end by a fastening-pin, p,with a pulley,8, attached to the shank w of the plug P. The other end of the cord islocated near the faucet e, and is provided with aring or handle forpulling it. As shown in Fig. 4, the plug P has a shank, 10, upon whichis secured the inner end of a spiral spring, F, the outer end beingsecured to a fixed bracket-arm, f. S is a grooved pulley, which ismounted upon the outer end of the shank w, and which has two projectingpins, as and or, so located that when, by pulling the cord Z,communication is established by the receiver A and the measuring-plug P,one of said pins strikes against the bracketarm f, while the tension onthe cord is relaxed, the disk S is turned back by the spring F, so thatthe other-pin a: strikes against the arm f, whereby communicationbetween the plug P and key D is established.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. A measuring apparatus for liquefied gases,consisting of a hollow plug, P, having admission-opening c, incombination with a guide-casing, 0, having a supply-opening, a, and adischarge-opening, t, in line with the opening of the plug, and meansfor causing said plug P to automatically turn on its axis, so that theadmission-opening 2; shall register normally with the supply-opening a,substantially as described.

2. A measuring apparatus for liquefied gases, consisting of a hollowplug, P, having admission-opening v, in combinationwith a guide-casing,O, having a supply-opening, u, and a discharge-opening, t, in line withthe opening of the plug, and the spring F, for causing said plug P toautomatically turn on its axis, so that the admission-opening 12 shallregister normally with the supply-opening a, substantially as described.

3. A measuring apparatus for liquefied gases, consisting of a hollowplug, P, having admission-opening c, in combination with a guide casing,0, having a supply-opening, a, and a dischargeopening, t, in line withthe opening ofthe plug, abracketarm, f, attached to said casing, a disk,S, mounted on an axial extension, to, of said plug, pins w and m in saiddisk, adapted to strike said bracket-arm f, and limit the axial movementof said disk and plug, and the spring F, for. causing said plug P toautomatically turn on its axis, so that the admission-opening 12 shallregister normally with the supply-opening u, substantially as described.

4. A measuring apparatus for liquefied gases, consisting of a hollowplug, P, having admission-opening c, in combination with a guide-casing,0, having a supply-opening, u, and a discharge-opening, t, in line withthe opening of the plug, abracket-arm, f, attached to said casing, agrooved pulley, S, mounted on an axial extension, w, of said plug, pinsas and x in said pulley, adapted to strike said bracket-arm f, and limitthe axial movement of said pulley and plug, the spring 1 for causingsaid plug P to automatically turn on its axis, so that theadmission-opening 1) shall register normally with the supply-opening u,and the cord Z, wound on said pulley in a direction the reverse of theforce of said spring, for turning said plug in the opposite direction topermit the discharge of its contents, substantially as described.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

EDUARD LUHMANN.

Witnesses:

ADOLPH ZEIJER, B. RoI.

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